Liphaephe tsa polyvinyl chloride (PVC) li fetohile lejoe la motheo la meralo ea motheo ea sejoale-joale, kaho le litsamaiso tsa liphaephe, tse ananeloang ka lebaka la ho tšoarella ha tsona, theko e tlase le ho tenyetseha ha tsona. Boleng ba liphaephe tsena bo khethoa haholo ke mofuta oa resin ea PVC e sebelisoang tlhahisong ea tsona.
Tataisong ena e felletseng, re tla hlahloba lefats'e la li-resin tsa PVC, re hlahlobe lintlha tsa bohlokoa tseo re lokelang ho li nahana ha re khetha resin e ntle ka ho fetisisa bakeng sa tlhahiso ea liphaephe tsa boleng bo holimo.
Mabaka a Susumetsang Khetho ea Resin ea PVC
Ho khetha resin e nepahetseng ea PVC bakeng sa tlhahiso ea liphaephe ho kenyelletsa ho nahana ka hloko ka lintlha tse 'maloa, ho kenyeletsoa:
Boima ba limolek'hule: Boima ba limolek'hule tsa resin ea PVC bo phetha karolo ea bohlokoa ho khetholleng matla a tšusumetso ea phaephe, ho tiea le ts'ebetso ka kakaretso. Li-resin tse phahameng tsa boima ba limolek'hule hangata li lebisa liphaepheng tse nang le khanyetso e matla ea tšusumetso le ho tiea.
Tekanyetso ea Phallo ea Melt (MFI): MFI e bontša ho phalla ha resin nakong ea ts'ebetso ea ho ntša. MFI e loketseng e netefatsa ho ntša ho boreleli, litekanyo tse tšoanang tsa phaephe, le liphoso tse fokotsehileng tsa ts'ebetso.
Mocheso oa ho Nolofatsa oa Vicat (Vicat B): Vicat B e emela mocheso oo resin e qalang ho nolofatsa tlas'a mojaro. Boleng bo phahameng ba Vicat B bo bontša khanyetso e betere ea mocheso le botsitso ba litekanyo tsa liphaephe.
Lintho tse eketsoang: Li-resin tsa PVC hangata li etsoa ka lintho tse eketsoang ho ntlafatsa thepa ea tsona le litšobotsi tsa ts'ebetso. Lintho tse eketsoang tse tloaelehileng li kenyelletsa li-stabilizer, li-filler, li-lubricant le li-impact modifiers.
Mefuta ea Resin ea PVC bakeng sa Tlhahiso ea Liphaephe
Ho latela mabaka a boletsoeng ka holimo, li-resin tsa PVC bakeng sa tlhahiso ea liphaephe li ka aroloa ka mefuta e 'meli e meholo ka kakaretso:
Suspension PVC (S-PVC): Li-resin tsa S-PVC li hlahisoa ka mokhoa oa ho etsa polymerization ea ho emisoa, e leng se fellang ka likaroloana tse chitja tse nang le kabo e pharaletseng ea boima ba limolek'hule. Li fana ka tekano e ntle ea matla a tšusumetso, ho tiea le litšobotsi tsa ts'ebetso.
Emulsion PVC (E-PVC): Li-resin tsa E-PVC li hlahisoa ka mokhoa oa ho etsa polymerization ea emulsion, li hlahisa likaroloana tse tšesaane tse nang le kabo e fokolang ea boima ba limolek'hule. Ka kakaretso li bontša matla a phahameng a tšusumetso le ho tiea ho tlase ha li bapisoa le li-resin tsa S-PVC.
Ho Khetha Resin e Molemohali bakeng sa Litlhoko tsa Hao
Khetho ea resine ea PVC e loketseng ka ho fetisisa bakeng sa tlhahiso ea liphaephe e itšetlehile ka ts'ebeliso e itseng le thepa ea liphaephe e lakatsehang. Mohlala, liphaephe tse reretsoeng ts'ebeliso ea khatello li hloka liresine tse nang le boima bo phahameng ba limolek'hule le litekanyetso tsa Vicat B ho netefatsa matla a lekaneng le ho hanyetsa mocheso.
Ka lehlakoreng le leng, liphaephe bakeng sa lits'ebetso tse seng tsa khatello, joalo ka ho ntsha metsi kapa ho nosetsa, li ka 'na tsa beha pele matla a tšusumetso le bonolo ba ho sebetsana le tsona, e leng se etsang hore li-resin tsa E-PVC e be khetho e loketseng.
Qetello
Khetho ea resin ea PVC ke karolo ea bohlokoa ea ho etsa liphaephe tsa PVC tsa boleng bo holimo. Ka ho utloisisa lintlha tsa bohlokoa tse susumetsang khetho ea resin le litšobotsi tsa mefuta e fapaneng ea resin, bahlahisi ba liphaephe ba ka etsa liqeto tse nang le tsebo tse ntlafatsang ts'ebetso ea liphaephe le ho fihlela litlhoko tsa lits'ebetso tse fapaneng.
Hopola hore ho buisana le bafepedi ba resin ea PVC ba nang le boiphihlelo le ho batla tataiso ea tekheniki ho ka ba bohlokoa haholo ho khetheng resin e loketseng litlhoko tsa hau tse ikhethang tsa tlhahiso ea liphaephe.
Nako ea poso: Phupu-02-2024